HOME >> BIOLOGY >> NEWS
Healthy reefs hit hardest by warmer temperatures

ve atop a limestone scaffolding built from the calcium carbonate secretions of each tiny coral, or polyp. While polyps provide the framework, corals vivid hues come from symbiotic single-celled algae that live within the polyps cells. The algae supply much of the food coral need to survive. When disease or stressful environmental conditions strike a coral colony, the polyps expel their algae. This algae loss makes the coral look pale.

During the study, the researchers monitored target reefs for white syndrome, which infects Pacific reef-building corals. The disease results in a white band of tissue or exposed coral skeleton that moves across a colony as infection progresses. (White isnt the only color of diseased coral other syndromes include black band, yellow blotch and dark spots.)

Scientists from the Australian Institute for Marine Sciences made yearly visits to the same reefs, applying epidemiological methods similar to those used for tracking human disease. They found white syndrome present on the reefs when the survey started in 1998. However, the syndromes frequency increased 20-fold in 2002 following a particularly warm summer. Sea surface temperature was monitored at each site using National Oceanic & Atmospheric Administration (NOAA) satellites.

Even during the peak of the 2002 outbreak, there was considerable variation in disease frequency among reefs, Bruno said. No white syndrome cases were recorded from 45 percent of the low cover reefs, while 88 percent of reefs above the high cover threshold at least one infected colony.

Reefs with high coral cover and warm sea surface temperatures had the greatest white syndrome frequency. Most of the outbreaks occurred in the Cooktown/Lizard Island and Capricorn Bunkers sectors of the Great Barrier Reef, which are some of the healthiest reefs in the Pacific, Bruno said.

The study shows that stress caused by anomalously warm ocean temperatures is n
'"/>

Contact: Becky Oskin
becky_oskin@unc.edu
919-962-8596
University of North Carolina at Chapel Hill
7-May-2007


Page: 1 2 3

Related biology news :

1. Healthy coral reefs hit hard by warmer temperatures
2. Healthy coastal wetlands would adapt to rising oceans
3. Second graders dig into Healthy Choices, Healthy Me!
4. Healthy coral reefs of Madagascar resisting damage from climate change
5. Healthy fruits, vegetables highlight joint medical, agricultural research meet in Texas
6. Healthy cleavage: How statins protect against Alzheimer disease
7. Healthy mix of GI tract microbes are key to preventing allergies and asthma
8. Indo-Pacific coral reefs disappearing more rapidly than expected
9. Waters off Washington state only second place in world where glass sponge reefs found
10. Investigating coral reefs to help understand past and future climate change
11. Palaus coral reefs show differential habitat recovery following the 1998 bleaching event

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/7/2020)... ... August 06, 2020 , ... Nine middle school teachers ... Scholar Program, a unique professional development program that provides advanced STEM (science, technology, ... science teachers nationwide. , Created in partnership between the National Stem Cell Foundation ...
(Date:7/31/2020)... ... July 30, 2020 , ... BioFactura, Inc. today announced ... the Joint Science & Technology Office—Chemical and Biological Defense (JSTO-CBD) of the Department ... scale-up a highly efficient mammalian cell culture-based bioprocess suitable to meet surge requirement ...
(Date:7/18/2020)... ... July 16, 2020 , ... ... effectiveness of the Invictus Medical Neoasis™ active noise control device to attenuate typical ... that the Neoasis™ device attenuated the alarm sounds from patient monitors, ventilators and ...
Breaking Biology News(10 mins):
(Date:7/7/2020)... ... July 06, 2020 , ... R3 International is now offering stem cell ... million stem cells. Depending on the patient's condition, treatment may be offered IV, intrathecal ... having some form of Alzheimers dementia, and the incidence continues to increase as individuals ...
(Date:7/1/2020)... ... June 29, 2020 , ... MedShift , a leading ... despite many obstacles created as a result of COVID-19. As a provider at ... medical practices and medical manufacturers by expanding access to device offerings, technology services, ...
(Date:7/1/2020)... ... June 30, 2020 , ... ... that the launch of a new clinical diagnostics immuno-oncology service, TissueInsight ... microenvironment (TME). , “Flagship’s TissueInsight is a service that aids pathologists, oncologists, ...
(Date:6/28/2020)... (PRWEB) , ... June 25, 2020 , ... ... are racing to develop a vaccine or drug treatment. In an effort to ... has publicly released the world’s largest imaging dataset portraying therapeutic compound effects ...
Breaking Biology Technology:
Cached News: